======================================
| xx__-> [   50.928392][  T585] netdevsim netdevsim2290 eni2290np1: renamed from eth0
| [   51.073437][  T585] netdevsim netdevsim31986 eni31986np1: renamed from eth0
| [   52.515008][  T581] BUG: using __this_cpu_write() in preemptible [00000000] code: python3/581
| [   52.515350][  T581] caller is tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1644)
[   52.515480][  T581] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   52.515482][  T581] Call Trace:
[   52.515484][  T581]  <TASK>
[   52.515485][  T581]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   52.515493][  T581]  check_preemption_disabled (lib/smp_processor_id.c:47)
[   52.515497][  T581]  tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1644)
[   52.515501][  T581]  __release_sock (./include/net/sock.h:1190 net/core/sock.c:3216)
[   52.515508][  T581]  release_sock (net/core/sock.c:3815)
[   52.515511][  T581]  tcp_sendmsg (net/ipv4/tcp.c:1456)
[   52.515515][  T581]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   52.515517][  T581]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   52.515523][  T581]  ? sock_ioctl (net/socket.c:1434)
[   52.515529][  T581]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   52.515534][  T581]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   52.515538][  T581]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[   52.515540][  T581]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   52.515544][  T581]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   52.515545][  T581]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   52.515547][  T581]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   52.515549][  T581]  ? irq_exit_rcu (kernel/softirq.c:754)
[   52.515552][  T581]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   52.515555][  T581] RIP: 0033:0x7f62578b408e
[   52.515559][  T581] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   52.515560][  T581] RSP: 002b:00007ffd4be4bbf0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   52.515564][  T581] RAX: ffffffffffffffda RBX: 00007ffd4be4bd00 RCX: 00007f62578b408e
[   52.515566][  T581] RDX: 00000000000007d0 RSI: 000055f5198d6510 RDI: 000000000000000a
[   52.515567][  T581] RBP: 00007ffd4be4bc00 R08: 0000000000000000 R09: 0000000000000000
[   52.515568][  T581] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f6256e988a0


Finger prints:
check_preemption_disabled:tcp_v6_do_rcv:__release_sock:release_sock:tcp_sendmsg